JPH03501641A - Friction facing material/carrier assembly and manufacturing method thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] II Friction Facing Material and Carrier Assembly The present invention provides a friction facing material and carrier assembly for a clutch driven machine. This relates to ashing materials and carrier assemblies.

The driven machine is used in a dry friction clutch.

In particular, clutch driven machines are used in clutches for automobiles.

This I! Ji! ! The fly-sink and carriage assembly is made of elastomeric polymer material. having at least one annular array (hereinafter referred to as such type) In use, the above assembly rotates around the axis. It has been designed so that it can be done.

U.S. Pat. No. 4,529,079 discloses that two continuous rings of friction material are provided on either side of the base layer. and each ring-shaped friction material has a dot or dot shape or a friction material A straight line extending in the radial direction of the ring, or a radial line extending tangentially to the ring. Assemble stripes and short straight stripes into multiple small separate strips of elastomeric polymer material. an assembly is disclosed in which the substrate is adhered to each side of the substrate by a It is. Defects associated with these speckles and radial stripes occur when torque is applied during use of the assembly. a rotational force 1 acting as a shearing force on the region of the elastomeric polymeric material when the assembly is rotated; As a result, regions of each elastomeric material body are "peeled away from the no-acing material or base layer". (starting on the trailing side of each area), thereby creating a There is a possibility that the adhesive strength of the adhesive may be weakened or eventually destroyed. same As mentioned above, the region of the elastic polymer material is short in the radial direction, linear and tangential. This can happen with a combination of stripes.

It is an object of the invention to obtain an assembly in a manner that eliminates or at least alleviates the above-mentioned defects. There are many things.

According to the invention, a friction facing carrier assembly of this type is provided with said annular array of friction facing carrier assemblies. A rubbing material is adhered to the carrier by a plurality of strips of elastomeric material, and the strips are bonded to the carrier. Each of the strips is substantially continuous and extends about said axis and extends in a radial direction of said axis. The strips are characterized in that they are folded together over at least a large portion of the strips. Ru.

The above-mentioned strip is constructed by configuring the tangent strip of elastic polymeric material in a substantially continuous manner. It is difficult for each region or regions to be relatively small.4For this reason, each region The shear resistance is increased and therefore the resistance to adhesion failure is increased.

The strip is a generally circular strip.

The circular strips are arranged as approximately concentric circles lying approximately on a common plane; The circle has an approximately rul-center lying approximately on the axis.

In the preferred embodiment, each of the strips is completely continuous.

At least one passageway is provided between two adjacent portions of the strip of elastic polymeric material for gas flow. It is preferable to allow flow in and out. Glue [44 to the carrier] During the curing or Japanese sulfur treatment of elastic polymeric materials, heated or 2 to an ambient atmosphere containing a compound of gas and steam to accelerate the curing. It is made possible to draw out two strips of elastic polymeric material (in the space mentioned above), and It is extremely important for each channel to undergo elastic polymerization during curing. The escape of gas emitted by the material is allowed.

Although porous or microporous elastomeric materials may be used, homogeneous solid elastomeric materials are preferred. is preferred.

The elastic polymer material is silicone rubber that hardens at air temperature to prevent distortion due to heat generated by Japanese sulfur. That's fine.

The elastomeric polymer material has the following physical specifications:

Hardness tester Chicoa A hard 1 (45 Friendship strength 28.12Kg/ca2 (4001)si) Elongation degree: 300% Next, the present invention will be described by way of example as follows with reference to the accompanying drawings.

FIG. 1 shows a dry IfF! formed according to the present invention! Forms part of A clutch driven plate a fragmentary plan view of one embodiment of a friction material and carrier assembly, Figure 2 is a sectional view taken along line ■-H in Figure 1, and Figure 3 is a cross-sectional view taken along line ■-H in Figure 1. 4 is an enlarged sectional view taken along line IV-IV in Fig. 1. , FIG. 5 shows the friction facings during the process of forming the assembly of FIG. 1. An enlarged scale fragment view, Figure 6, shows the fragments forming part of the dry friction clutch vJ&. The elastic polymer material to be used for the friction material and carrier assembly of the second actual journey example a plan view of a friction facing forming another strip arrangement; 7 is an Igi side view showing the second embodiment, which corresponds to FIG. 2, and FIG. 8 is similar to FIG. 3. 9 is a sectional view showing the second embodiment, and FIG. 9 is similar to FIGS. 7 and 8, but the elasticity FIG. 3 is a cross-sectional view of a second embodiment in which a strip of polymeric material is formed with an interruption.

Similar or corresponding parts in the drawings are provided with the same reference numerals.

In Figures 1 to 5, r! 1. The vibration material, carrier and assembly are used for clutches, e.g. This automatic assembly, such as a diaphragm spring clutch, has an assembly built into the driven plate above. 6 so that it fits onto a female spline hub (not shown) as is well known. A disc-shaped, largely flat steel carrier plate 4 with a central opening is provided. There is. The opening 6 is surrounded by a flared or chrysanthemum-shaped periphery 8 . Also, carrier The plate has a well-known window 10 for a torsional vibration absorption spring (not shown) and a well-known window 10 for a torsional vibration absorption spring (not shown). A hole 12 for a stop rivet (not shown) is formed.

At the periphery of the carrier plate 4, a plurality of outwardly protruding water rings 14 or spokes are provided. It is formed integrally with the main body of the rear plate. The spokes are flat and the main part of the carrier plate. The main body (approximately) is placed on the same plane, and the assembly 2 rotates during use. They are spaced apart at approximately equal angular intervals around the central axis (X). Form of slot 16 spokes or lobes having generally radially opposed edges 18 due to the hollow portion It will be done.

In the illustrated example, 30 spokes 14 and 30 slots 16 are provided. circumference On the surface, each spoke 14 extends over approximately 76 arcs and has a respective slot. 16 extends for approximately 5°. If necessary, change the number, size and shape of spokes. and spacing can be changed.

The spokes 14 can be elastically bent along a direction substantially parallel to the axis (x). It bends in the axial direction like a leaf spring. This causes the carrier plate 4 to form a circle with the spokes 14. It can bend in a curved manner in the circumferential direction.

two substantially simultaneous and coaxial annular friction facings 20 and 22, respectively; An elastic polymeric material 24 is bonded to both sides of each spoke 14. Elastic polymer material 24 is the l of direct spoke 14! i! Glued to the surface of the rubbing facing 20.22. Bullet The polymer material is preferably a heat-resistant synthetic rubber such as silicone rubber. Rubber is made of air-mixed sand ( Rubber (referred to as RTV) is fine. An example of such a silicone rubber is manufactured by Downwing Company. An example is RTV 7057 related to sales. Another example is wakerization ELAST (,) SIL (trademark) E14 manufactured by Gakusha and yet another example An example of this is RTV159 manufactured by General Electric Company in the United States. Naturally However, silicone rubber of the fluorine silicone rubber type is also used.

Friction fades during use without the rubber degrading and loosening its required adhesive strength or elasticity. - higher temperatures than the material is believed to withstand, e.g. about 300°C or The ability to withstand higher temperatures would also be considered desirable.

The elastic material consists of concentric annular strips or beads having approximately the same center on the axis (X). It is formed as separately radially flattened quantities in the shape of a dome. Figures 3 and 4 A circular strip bonding the friction facing 22 to the paddle as clearly shown in the figure. Between the shaped pieces or beads 24A, 24B, 24G, 24H, 24J, 24 and 24L It is the opposite of a gap.

Each friction facing 20°22 is made of a suitable friction material and is non-asbestos based. type, but each facing should be bent at least in the circumferential direction. It exhibits some elasticity so that it can be deformed or deformed.

Each of the facings 20 and 22 is thin, for example, with an axial thickness of 2 shoes or less. That's fine. However, friction facing2. It may be thicker than OOam.

the curvature flexibility of the carrier plate 4 and the elastic flexibility of the friction facings 20 and 22; Thus, the entire friction facing and carrier plate assembly 2 is at the spokes 14. It can bend and flex in the circumferential direction.

The layer 24 of elastomeric polymer material provides an elastomeric cushioning effect between the friction facing and the paddle 14. results in an overall axial cushioning effect between the friction facings. . Friction facings in combination with appropriate flexibility and/or elasticity of the friction facings A sandwich configuration with an elastic polymeric layer distributes axial pressure over a relatively small area of each The entire area of the friction facing can be compressed or axially bent to some extent locally. As shown in FIG.

However, assembly 2 can be used for automotive clutches such as diaphragm spring clutches. If a part of the clutch is configured, the subjective impression and quality of clutch re-engagement will be affected. Force roots and diaphragm springs and/or diaphragms and clamps are British patented. It is a corrugated wire fulcrum ring in No. 1583403.

Since the elastic polymer adhesive 24 is used for the clutch target tJ+b, the above-mentioned thermal deterioration is avoided. Resistance to oxidation and mass of elastic polymer material and 1 composite material and ff! ! ! Facing and Good shear strength must be demonstrated in both the bonds that form between the paddles.

The manufacturing of the friction material and carrier plate assembly according to the present invention involves the use of a fluid or paste. An elastic polymer material is sandwiched between the carrier plate and the friction facing, and the entire body is slightly axially Apply a counter force to the elastic polymer material and kill it. Rear handling and FJ friction with rear plate and friction facing A removable space saving device is placed between the flat sink and the plate and each grinder. It is desirable that the layer of elastomeric polymeric material between the rubbing facing is at least a minimum This can be guaranteed to ensure that the Next, the elastic polymeric material is cured into a solid is removed, and then the space saver is removed.

As shown in FIG. 5, during the manufacture of assembly 2 (FIG. 1), the elastomeric material is formed into a circular strip. The respective I I! Apply to 1m facing. Next, attach the strips on each facing to the paddle 14. Press and harden. In the case of RTV, the rubber curing process is simply a This is a process in which the material is exposed to appropriate room temperature and humidity over a length of 1 m. For example, R3M5O No. 12 cures in about 48 hours at about 25 degrees and about 50% humidity.

As shown in Fig. 3 and Fig. The composite material strip does not extend through the slot 16 to the other friction facing. 16 (such passages are indicated by double arrows in FIG. 4). ) is left behind. These passages allow the elastically polymerized moon strips to harden during the curing of the elastically polymerized material. This creates an escape route for the gas released. In addition, this passage also changes the surrounding atmosphere. The elastic polymeric material can completely cover both sides of each circular strip. Ru.

The strips of elastic polymeric material in the embodiments of FIGS. 1 to 4 are in the form of continuous concentric circles. There is. Instead of a perfect circle, each strip may take the form of a mo that draws an occluded figure. By way of example, each strip may have a wavy or curved or zigzag configuration.

Also, the strips may periodically contact each other.

The use of elastic polymer material in the centripetal strips simplifies the assembly process, allowing for the appropriate number of strips. The rows of elastic extrusion nozzles are arranged approximately radially around the axis of each phase. The time required to apply each strip to the friction facing is reduced by simply rotating the strip. Shrunk. In this way, facing can be carried out quickly on the carrier plate, thereby A skin can be formed on the elastomeric polymer before applying the facing to the carrier plate. Reduces the likelihood of sufficient time lapse. t is the key that falls on the elastic polymer strip j4. The formation of a skin before attachment to the carrier plate reduces the shear strength of the elastic polymer adhesive to a low FT. This makes it possible to use a rapid assembly method without skinning.

forming at least one interruption in at least one of the strips rather than being completely continuous; It's okay. Each interruption represents an angle of only a few degrees with the axis (X), as opposed to the complete strip The entire length makes an angle of at least several degrees in said axis, and the strips are Where such interruptions are present, the sum of the angles indicated by the interruptions shall not exceed approximately 60°. stomach.

If required, the carrier &4 is provided with an annular circumferential rim portion 26, partially shown in dotted lines. This rim portion 26 is integral with the paddle 14, and the hollow portion 16 is entirely connected to the carrier plate 4. surrounded by materials.

In the embodiments shown in FIGS. 6 to 9, 2' is a friction facing according to a modified example. and a carrier assembly in which the friction facing 22 has a short interruption. 28 of concentric circular strips of elastic polymeric material 24A, 24B.

It is adhered to the paddle 14 by 24C, 24D and 24E. on the axis (X) each interruption 28 exhibits an angular position, and each of the respective elastic polymeric strips Its complete length represents an angle C with the axis (X). The angle is only a few degrees In this example, it is 5°, which is approximately equal to each circumferential span of each vortex 16. Angle C is b In this example, the angle C is approximately 856. In this example, the angle The reading does not exceed approximately 20”.

The friction facing 20 has elastic concentric strips as in the case of the facing 22. Polymer arrays 224A, 224B, 224C, 224D and 224E are provided. ing. Therefore, as shown in Figures 7 to 9, the Each elastic polymer strip is attached to another [X-facing strip elastic polymer Placed opposite the body, the bullet on the facing 20 in the majority cavity or slot 16 A corresponding elastic polymer strip on the acing 22 (as shown in FIG. 8) Attached to the body strips. Silently, the elastomeric polymer on some friction facings The interruption 28 is opposite the interruption in the elastomeric polymer on the other facing. This corresponds to a certain slot of the narrow slot 16, as shown in FIG. Therefore, assembly 2' , there are four generally radial passages (one shown at double-headed arrow d in Figure 9). ) is an arcuate chamber between the surrounding atmosphere and the elastic polymer of adjacent strips on each friction facing. It is formed for free flow of gas between. In the modified example, one friction At least one elastomeric strip on the rubbing facing is connected to the other facing. The spacing between two adjacent elastic polymer strips on the ring is opposite.

Said interruption 28 in the elastomeric polymer of said strip is another elastomeric polymer strip. need not coincide radially with the interruption in . Instead, the first and second The interruption in the first strip (the interruption mentioned first) in the adjacent letter piece in the scraping direction. ) to the second strip (offset or circumferentially from the interruption (interruption mentioned later) Staggered in direction, and in any of the interruptions in the second strip as mentioned below. The sections are circumferentially adjacent to each other by the first-mentioned interruption. However, if there is a friction The elastomer strip on one facing is opposite the elastomer strip on the other facing. if the at least one interruption in the radially innermost or outermost strip is It should match void 16.

Submission of Translation of Written Amendment (Music 5i2184 Aya 8) June 8, 1990 Ward

Claims (18)

[Claims] 1. An assembly of friction facing material and carrier for a clutch driven plate, The assembly includes at least one annular array (20, 22) of friction material in the elastomeric polymeric material 24. is attached to the carrier 4, and when in use the assembly is centered around the axis (X). In the assembly configured to be able to rotate with the friction material (20, 22) An annular arrangement comprises a plurality of strips of said elastic polymeric material (24A, 24B, 24C, 24D, 24E, 24F, 24G, 24H, 24J, 24K, 24l; 224A, 224 B, 224C, 224D, 224D, 224E) to the carrier (4). each said strip extends substantially continuously around said axis (X) and has a front characterized in that the strips are at least largely separated from each other in the radial direction of the axis; Friction facing material and carrier assembly. 2. Each of the strip pieces (24A, 24B, 24C, 24D, 24E, 24F , 24G, 24H, 24J, 24K, 24L; 224A, 224B, 224C, 224D, 224E) are substantially circular strips. Assembly by terms. 3. Circular strips (24A, 24B, 24C, 24D, 24E, 24F, 24G, 24H, 24J, 24K, 24L; 224A, 224B, 224C, 224D, 224E) are substantially concentric circles lying in a substantially common plane; have substantially the same center lying substantially on said axis (X) Assembly according to the second term of the range. 4. Each of the strip pieces (24A, 24B, 24C, 24D, 24E, 24F , 24G, 24H, 24J, 24K, 24L; 224A, 224B, 224C, 224D, 224E) are completely continuous. A coarse solid by any one of the third terms. 5. At least one passageway (a, 28) is provided, thereby allowing two passageways (a, 28) of the elastic polymeric material. Between the adjacent strips of the book (24A, 24B, 24C, 24D, 24E, 24F) , 24G, 24H, 24J, 24K, 24L; 224A, 224B, 224C, 224D, 224E) to allow gas flow into and out of the space. An assembly according to any one of claims 1 to 4, characterized in that: . 6. Two said annular arrays (20, 22) of friction materials are provided, each as described above. Claims characterized in that the carrier (4) is glued to each opposite side of the carrier (4). An assembly according to any one of items 1 to 5. 7. Said carrier (4) is bridged by said annular array (20, 22) of friction material. Claim characterized in that one or more cavities (16) are provided through the An assembly according to any one of the first to fourth terms in the range. 8. The carrier (4) is provided with one or more cavities (16) therethrough, and said There are two annular arrays (20, 22) of friction material, each attached to a carrier as described above. and each cavity (16) is glued to opposite sides of each of the friction material. bridging by the arrangement (20, 22), at least one passageway (a) is connected to said cavity ( 16) between at least two adjacent strips (24A, 24B, 2 4C, 24D, 24D, 24E, 24F, 24G, 24H, 24J, 24K, 2 4L) (on the same U side as the carrier), the carrier (4), and the elastic polymer material of the two strips. and the annular array (20, 22) of friction material bonded to the carrier. substantially radial flow of gas into and out of the assembly (2); An assembly according to any one of claims 1 to 4 characterized. 9. The two strip pieces (24A, 24B, 24C, 24D, 24E, 24F, 2 4G, 24H, 24J, 24K, 24L) and the space between them is the carrier (4G, 24H, 24J, 24K, 24L). ) and extending across said cavity (16) is another annular arrangement of friction material. said another strip (24A, 24B) bonding the rows (20, 22) to the carrier; , 24C, 24D, 24E, 24F, 24G, 24H, 24J, 24K, 24L ) is on the other side of the carrier and extends across said cavity (16) and is connected to said space (16). Placed opposite the pace (a), these three strips are placed in the space (16). each at least partially separated from said annular array (20, 22) of friction material. 9. An assembly according to claim 8, characterized in that: 10. The strip pieces (24A, 24B, 24C, 24D, 24E, 24F, 24G , 24H, 24J, 24K) are slightly interrupted in the axis (X). An angle (b) of several degrees is shown, whereas any full length of the strip lies in said axis (X). exhibiting an angle (c) that is at least several times larger than several degrees, and the strips form a plurality of said interruptions. the sum of the angles (b) indicated by the interruptions (28) exceeds about 60°; According to any one of claims 1 to 7, characterized in that assembly. 11. Claim characterized in that said interruption (28) matches said void (16) Assemblies according to scope 7 or 10. 12. The carrier (4) has a plurality of paddles (14) on its periphery, the paddles A respective annular array of friction facing materials is adhered to the ring as described above, and each The cavity is a slotted hole (16) between two adjacent paddles (14). An assembly according to any one of claims 7 to 11. 13. characterized in that each said paddle (14) is elastically deflectable; An assembly according to claim 12. 14. The annular array of friction facings (20, 22) is one of the friction facings. Any one of claims 1 to 13, characterized in that it is a body-forming ring. Assembly with two terms. 15. characterized in that the annular body (20, 22) of the friction facing material exhibits interchangeability. An assembly according to claim 14. 16. An assembly (2; 2) according to any one of claims 1 to 15 ') A clutch driven plate characterized by having: 17. A clutch comprising a driven plate according to claim 16. 18. An automobile characterized in that it is provided with a clutch according to claim 17.